Webservices subsystem is not scanning all visible classes for @WebService annotation

Issue

I have an EAR with a WAR and a jar found in the ear's lib/ directory. The web.xml of the WAR refers to a JAX-WS endpoint class that is located in the jar that is in the ear's lib/ directory. Upon deployment I get this error:

14:49:00,262 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/TestService].[AuthService]] (http-localhost.localdomain/127.0.0.1:58320-1) JBWEB000235: Allocate exception for servlet TestService: java.lang.ClassCastException: com.test.TestService cannot be cast to javax.servlet.Servlet